In the given question, a statement of Assertion is followed by a statement of Reason. Mark the correct answer.

Assertion: Constituent Assembly that framed the Constitution was primarily consisting of Congress members.
Reasoning: Muslim League chose to boycott the Constituent Assembly pressing its demand for Pakistan with a separate constitution.

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

Congress swept the general seats in the provincial elections, and the Muslim League captured most of the reserved Muslim seats. But the League chose to
boycott the Constituent Assembly, pressing its demand for Pakistan with a separate constitution. The Socialists too were initially unwilling to join, for they believed the Constituent Assembly was a creation of the British, and therefore incapable of being truly autonomous.